We use Tranzeo TR-902's in hills all the time, and have good luck.
I use this unit to reboot my Ap's on the towers, it is controlled with a 
pager.
http://www.wesellpagers.com/wireless_switch.htm

Bob Rothstein
Prime Access
(877) 333-1003

Works flawless
NGL

--------------------------------------------------
From: "Greg Ihnen" <[email protected]>
Sent: Wednesday, April 13, 2011 1:54 PM
To: "WISPA General List" <[email protected]>
Subject: [WISPA] Can 900MHz do this?

> I've been asked by the powers that be in a nearby small municipality to 
> remote control their generators as I have done on our own, so they can 
> quickly shut it down when lightning approaches. They just lost one of 
> their 500KVA generators to lightning. I'd be volunteering my time and 
> expertise in return for brownie points.
>
> What I did where I live is use UBNT 2.4GHz gear because the distance is 
> short and it's line of site.
>
> Where I've been asked to do this job the layout is the generator is up on 
> a small hill on the far side of the peak from the town (not line of site). 
> The link distance would be about a mile. The hilltop has a smooth rounded 
> transition, not a jagged peak. I'm wondering if 900MHz would be choice 
> here since it's nlos.
>
> If I did this in 2.4GHz I think I'd need an intermediate hop. There is a 
> convenient place to put an intermediate hop which might consist of a 
> Picostation plus car battery, charge controller and solar panel. The 
> problem with this is the complexity, cost and theft issues.
>
> There's no good data for the area to do something like Radio Mobile.
>
> I'm just curious what people's experience has been with 900MHz and hills.
>
> Thanks!
> Greg
>
>
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